extremely significantP < 0.01
α-HCH was in extremely significant positive correlation with δ-HCH and β-HCH (P < 0.01), δ-HCH was in extremely significant positive correlation with β-HCH (P < 0.01), Aldrin was in extremely significant positive correlation with Dieldrin and Endrin (P < 0.01), Dieldrin was in extremely significant positive correlation with Endrin (P < 0.01). α-HCH was in significant negative correlation with PCB 28 (P < 0.05).